Accessibility and usability cleanup

Ideally, these can be cleaned-up, updated, and parts merged together. (Worst-case scenario: the old pages are all left as is, and yet more pages are created; that would lead to more things going out-of-sync and out-of-date, and more conflicting information.)

Many of these pages have active talkpages (some with a ~dozen archives). I've added a few annotations, but tried not to clutter the lists up too much, at least initially.

Please, add to this list, and use it as a scratchpad, to help organize the existing pages.